Operation Manual

Continuous valve actuator CHEOPS control
theben
As of: Jul-11 (Subject to change without notice) Page 42 of 71
4 Start-up
IMPORTANT INFORMATION.
• During maintenance work on the radiator, the actuator is always dismounted and the
valve securely closed by an alternative method
(original protective cap etc…). The valve could be unexpectedly opened, potentially
causing water damage, through either the control or the valve protector.
• Cheops must already be mounted on the valve when the application is downloaded,
otherwise no adaptation can take place.
4.1 Installation
First, the unit is mounted onto the valve using the correct adapter ring.
The bus voltage can then be applied.
This automatically starts the adaption process.
When does the adjustment process occur?
Automatic adjustment occurs for the first time after the bus voltage is applied in the Site
function, and afterwards each time the application is downloaded.
A new calibration run is performed at regular intervals after reset and during the course of the
heating phase.
In order to correct the changes of the Valve characteristics over the course of time (aging of
the rubber seal), the valve is automatically remeasured on a regular basis.
NOTE:
• If an adjusted device is mounted on a different valve, the adjustment process
must be repeated by downloading the application.
• The previously stored positions are deleted after a download.
The calibration run is performed twice on account of the plausibility test.